A driver is speeding at 40 m/s when she slams on the brakes of her car. She skids for a distance of 67 meters before coming to a stop. What is the acceleration of the car? * A. -11.94 m/s²
B. 0.3m/s²
C. 53600 m/s²
D. -16.42 m/s²

An automobile of mass 2000 kg moving at 30 m/s is braked suddenly with a constant braking force of 10000 n. how far does the car travel before stopping?

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =

Aball horizontally thrown from a cliff at 8m/s